Refrigerator



(No Model.)

\JB.HARTMAN. l l REFRIGBRATOR. No. 289,833. Patented Deo. 11, 188s.

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UNITED STATES- PATENT Brion.

JACOB B. HABTMAN, OF WoosrBB, OHIO.

REFRl-GERATOR.

SPECIFICATION forming partof Letters Patent No. 289,83?, dated December11, 1883.

Application led March 8, 1883. (No model.)

To all whom t may concern,.-

Be it known that I, JACOB B. HABTMAN, of Wooster, in the county of Vayneand State of Ohio, have invented a new and useful Improvement inRefrigerators, of which the following is a specification.

My inventionrelates lto certain improvements in the construction andarrangement of refrigerator-buildings. y

Refrigerators having some ofthe features described in connection with myinvention havebeen heretofore used.

The object of my invention is to provide a simpler and more effectivewall, and at the same time a better method of Ventilating therefrigerator than heretofore used.

My invention consists, first, in the use of a refrigerator-wallconstructed with dead-air chambers, which have no connectionwhateverwith the interior of the refrigerator, or with the Ventilating systemthereof, or with each other, each dead-air chamber being separate andentirely surrounded by continuous sheathing of asbestus or othersuitable material to resist heat, and the number of such dead-airchambers being proportioned to the degree'of heat -resistance requiredin any particular case. Heretofore air-chambers similarly constructedhave been made to communicate with the interior of the refrigerator andwith each other, and also to form a means of Ventilating the same. Thismethod is objectionable because the ice is thereby more rapidlyexhausted by means of the draft upon it, and by using it to cool the airof the air-spaces; and, further, by this communication the interiorcooling-chamber is at the same time brought into closer contact with theexternal air. This defectI overcome by the use of absolutely-deadairchambers lined, severally, with suitable heat-resisting material andentirely disconnected with the Ventilating system.

My invention consists, secondly, in an improved device for Ventilatingthe coolingroom. This I accomplish by the use of ventilating pipes or.iiues wholly disconnected with the dead-air chambers within the wall.These pipes are open at both ends, and extend vertically from the bottomto theltop of the refrigerator, and'in their passage intersect pipesleading from the cooling-room at the top of the refrigerator, so thatthe air-current which naturally and constantly arises in the extert vnal Ventilating -pipes in passing over the mouths of the pipes leadingfrom the coolingroom'cause a suction thereupon after the man- -ner'of asiphon, .which extracts warmth and ventilator at'the top. The innersurface of 7o this external Weathercasing, including the roof, is linedthroughout with asbestus sheathing or other non-heat-conducting sheetlining. The open-air passage has no direct connection with theice-chamber. I do not claim any part of this external Weather-casing,except the arrangement of internal non-heat-conducting linings and of acontinuous air-passage disconnected from the interior, as abovespecified.

Referring to the drawings, in which similar letters of referenceindicate like parts, Figure 1 is a vertical section of my refrigeratorcut through opposite Ventilating-dues in the sides and top. Fig. 2 is ahorizontal section of the same. Fig. 3 is a front elevation of a door ofthe same.

R, Figs. 1 and 2, is the refrigerating-chamber, in Which `is situate.near the top, an icereceptacle, I, from which a duct, t, conducts theice Water into a reservoir, G, Which empties externally through a pipe,t, by the spigot s.

.A A are the two segments of an open hollow- Wall Which entirelysurrounds the icechamber R. These segments are united and form thedead-air chambers-C C.

D D are opposite Ventilating-fines, which open externally at o o', andpass up through the hollow wall and top, where they intersect and passover the openings E E from the ceil- IOO ing of the ice-chamber, andafterwardtera c are sheet linings of asbestus sheathing orothernonlieatcon'ducting material adj acent to the open hollow of thewall. y

X is the external weather-casing, with internal non-heat-conductingsheet lining a, of

asbestus sheathing or other suitable material continuous with the roof Zto the ventilator V. 3/ y are open air-passages between theweathercasing and refrigerator-wall. l

L, Figs. 2, 3, is a door into the ice-chamber, having flanges F F,overlapping the margin of theentrance, and forming an angle or `cornerto receive the elastic cushion-stripI P l?, attached to the margin, sothat when the door is shut the crevice will be airtight. The arrowsshowthe direction of the aircurrent's.

suitable non-heat-conducting lining surrounding an ice-chamber, thedead-air chambers having no communication with the icechambers, or withthe ventilators thereof or with each other, of an external weather-casing open below and separated from the Wall b y acontinuous,,air-space, and united at the top to form a roof with aventilator, Where such eX- ternal casing and roof are lined upon theirinner surface with asbestus sheathing or other suitablenon-heat-conducting sheet lining, and said air space is disconnectedwith direct airpassages from the ice-chamber, substantially as setforth. Y

In testimony whereof I hereunto set my handand seal this 30th day ofJanuary, A. 13.1883.. Y o.

JACOB B. HABTMAN. [L ws] Vitiiesses: Y Y

HIRAM B. SWARTZ, LUCAS FLATTERY.

